Phonograph-reproducer.



N. H. HOLLAND. PHONOIGRAPH REPRQDUC'ER. APPLLCATION FILED OCT. El 1913.

L L37A7Q Patented Apr, 27, 1915.

responding parts wnwirtAN-H. rtotneun, or .es'r onauen, iv'nw resser, essreuoa are new means I? TENT GQEHLPANY, OF WEST ORANGE, NEW JERSEY, A CORPORATION NEW.

JERSEY.-

Specification of Letters Patent.

rnouoenern' nnraonucna.

Patented Apr. 2?, 1915.

Application filed October 6, 1913. Serial no. 793,547.

'20 all whom it may concern:

Be it known that I, NEWMAN H. Hons'aNn, a subject of" the King oi Great Britain, and a resident of West Orange, in the .county of Essex and State of New Jersey,

have'invented a certain newv and useful Invention in Phonograph-Reproducers, of which the followin is a description.

, The present invention relates to' phonograph reproducers, object the provision of a reproducer'capable of withstanding jarring without causing. the stylus to skip from one thread of the record groove to another, thus insuring the'exact tracking and reproduction of the record.

tion contemplates more particularly the im" provement of reproducers 'of this general type.- in the said application, the stylus supporting member is connected to the floating'weight by a flat spring which, while permovement of the stylus lever and its supporting member normally tends to maintain the stylus lever and the member supporting the samein central position and to prevent skipping of the stylus from one record. groove to andther,

in the present application,

for preventing th from one record groove to another.

In order that the invention may be more clearly understood, reference is made to the accompanying drawing forminga part of the specification and in which the same-referencecharacters are used'todesignate corthroughout.

In the drawings Figural is an elevation partly'brolren away and partly in section showing a reproducer constructed in accord 'ance with my invention; and F ig-. 2 is a bottom view thereof.

and has for its principal improved. means, preferably pneumatic, are provided e slnpplng of the stylus The sound box body 1 is provided with a sultable diaphragm 2, held in position in any suitable manner, and with an annular rim or flange 3. Flange 3 .is provided with a depending member a, which may be of any suitable form, but is here shown as a bracket integral with flange 3, and having a. lat-= orally extending lug 5. Floating weight 6 is connected to member 4 in any suitable manner, but preferably by means of a pivot pin or stud 7 carried by a pair of lugs 8, 8 on. the weight, the pin being mounted in lug 5. Lugs 8, 8 closely engage the sidesof' lug to prevent lateral movement of the weight with respect to the sound box. This preferable manner of mounting the Weight confines its movement to a direction substantiallyat right angles to the plane of diaphragm 2-. A member 9 of small inertia compared with floating weight 6, is connected to said weight by any suitable resilient means, as-for example, by a very thin, fiat and sensitive spring 10 of any suitable material, such as spring steel, rigidly connected at its ends to floating weight 6 and member 9 respectively. Part 9 is shown as an elongated member which is preferably mounted in. a'position substantially parallel with floating weight 6 and 'within said weight by providing a central recess 11 in said weight of suflicient width to allow considerable lateral movement of the member therein. Resilient member 10 is shown as arranged in a vertical position with one of its ends securely fixed to weight 6, at the center of the wall closing the end of recess 11, while the other end of member 10 is fixed to the flat end 12 of member 9 at its vertical center line. As here shown, the horizontal axis of members 6, 9 and 10 coincide, the construction being such that resilient momber 10 normally maintains part 9 in a con tral position with respect to weight 6.

Mounted on member 9 in any suitableeway as by a yoke 13 fastenedto the under side of said member and pivot pin 14 is a stylus lever 15 connected to diaphragm 2 in any suitable manner, as by linksx16 passing through an aperture 17 pro'v1ded in said member 9. Stylus lever 15 carries the usual 22in order'that the mounting of stylus lows:

stylus 18. adapted. to track the threads of the record, a portion of which is shown at 19 in Fig. 1.

Lateral movement of member. 9 with respectto the diaphragm, and in the example shown also with respect to the floating weight, is confined within limits, by reason of the free end of said member being received in a stirrup 20 depending from'the sound box body 1. Member 21 is a brace connecting the separated end portions of weight 6, formed by recess or slot 11. Weight 6 is -provided with the. usual groove lever 15 on'me'mber 9 may be readily accessible. The specific structure hereinbefore de-. scribed is disclosed in the application here-,

'inbefore referred to of Alexander N. Pierman and forms per 86 no part of the present invention. According to this invention, a member'23, preferably cylindrical in form, is pivoted to'themember 9, as by a vertical pivot 24:, so as to be capable of movement about said pivot in a direction parallel to the fioating weight. Member 23 is slidable or reciproqable in a cylindrical recess 25 formed in the floating weight, said recess extending tranversely with respect to the member 9. There is iii-comparatively close fit between the member 23 and the side walls of the recess-25 so that movement of said member into said recess tends to compress the air in the bottom of the same, and a dash pot action is thereby obtained. Ac-

cordingly, although'the member 9 and the stylus lever carried thereby are movable laterally to permit the stylus to follow the lateral irregularities inthe record groove, any sudden movement thereof such as would be produced by a jar to the reproduceris prevented by the damping action of the dash pot, I

-It is to be understood that my invention is not limited to the connection of the member 9 to the floating Weight by a spring as hereinbefore described, as the said member'may be mounted for lateral movement in -numer-'- ous other ways. Various other changes may.

be madein the specific structure disclosed .without departing from the spirit of m'yinvention. "f Having now described my invention, what I claim as new and desire to protect by Letters Patent of the United. States is as 01- 1. In a phonograph reproducer, the combination with a sound box having a dia- .phragm mounted therein, of. a. floating weight mounted on said sound box, a member mounted on said floating-weight and free to oscillate laterally with respect to the same, a stylus lever connected to said diaand pivotally mounted on said member, and

a dash pot for damping the lateral movement of said member, substantially as described;

,3. In a phonograph reproducer, the combination with a sound box having. a diaphragm mounted therein, afloating weight mounted on said sound box, a member mounted on said floating weight and free to move laterally with respect to the same, a stylus lever connected with said diaphragm and pivotally mounted on said member, and

a dash pot for damping the lateral move ment of said member, said dash pot comprising a reciprocatory member pivotally connected to said laterally movable member, substantially as described.

4. In a phonograph reproducer; the combination' with a sound box having a diaphragm mounted therein, of a floating weight mounted on said sound-box, a memher mounted on said floating Weight and free to oscillate in a direction substantially parallel to said floating weight, a stylus lever connected to said diaphragm and pivotally mounted on said member, and pneumaticmeans for dampingthe movement of said member parallel to said weight, substantially as described.

'- 5., In a phonograph reiproducer', the com-- bination with a sound ox having a diaphragm mounted therein, of a'member free to oscillate laterally with respect to said sound box, a stylus lever connected to said diaphragm. and plvotally mounted on said member, and pneumatic means for damping the-lateral movement of said member, sub stantially described.

6. In ,a' phonograph reproducer, the combination with a sound box having a 'diaphragm mounted therein, of a member free .to oscillate laterally with respect to said sound box, a stylus lever connected to said diaphragm and pivotally .mounted on said member, and a dash pot for damping ,the

lateral movement of said member, substan tially as described. y

- 7. In a phonographreproducer, the combinatlon with a sound box having vibratory .means mounted therein, -of a stylus lever connected with .said vibratory means and free to oscillate laterally with respect to said mazes? ,scue box, and pneumatic means for damping the lateral movement of said lever, substantially as described.

8* in. a phonograph reproducer, the-com- ?sinafion with a sound box having vibratory means mounted therein, of a stylus lever "eennecteci with said vibratory means and izo esciliate laterally with respect to said a Mei 392, and pneumatic means comprising 

